Unfortunately our searchtool is indexing rather slow, resulting in not yet producing more recent threads in the searchresults. Understood from our Admin. that this will be solved very soon. I'm running my own search-software and for the time being I'm glad to help out others.
PS
If you're looking for threads which you created yourself or in which you participated, then you could find them by clicking on "MyPosts" at mainpage (just under cartoon).